Comparison of characteristics of first MRSA isolation from various clinical sites >2 days after admission to Oxford Hospitals, 1998–2006

*univariable p values from chi-squared or Kruskal-Wallis/ranksum tests for categorical and continuous variables respectively.
**first MRSA isolation from specified samples this admission (predominant site according to order above when MRSA isolated from multiple types of specimens on the same day).
†3 months April to June 2006: percentages are of complete financial years only.
‡any sample tested at ORH from 1 January 1995 onwards, during or outside of an ORH admission, but strictly before the current admission
Note:excluding repeated positive isolations within a single admission.

* 针对分类变量与连续变量，分别采用卡方（Chi-squared）检验与克鲁斯卡尔-沃利斯（Kruskal-Wallis）/秩和（ranksum）检验计算得到的单变量p值。
** 本次住院期间从指定样本中首次分离到的耐甲氧西林金黄色葡萄球菌（MRSA, Methicillin-resistant Staphylococcus aureus）；若当日从多种标本中分离到MRSA，则以上文所列顺序优先的部位作为主要分离位点。
† 2006年4月至6月（共3个月）：百分比仅针对完整财年统计。
‡ 1995年1月1日起在ORH接受检测的所有样本，无论采样是否处于ORH住院期间，但严格限定于本次住院之前。
注：排除单次住院期间重复出现的阳性分离结果。